Solve for x: 3 over 3 x plus 1 over quantity x plus 4 equals 10 over 7x .

1 answer:

6 0

There is one last step after getting x = 3. You must check x = 3 in the original equation to be sure that x = 3 does not cause a zero denominator.

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Question 7

The rate of change in Health Club A is 12 as given in slope-intercept form
The rate of change in Health Club B is 21 as given by an increase of $21 per month
The rate of change in Health Club C is 15 as given by (70-40)/(3-1)=15
The rate of change in Health Club D is 20 as given by "$20 each month for x months"
Therefore, Health Club B has the greatest rate of change of $21 per month

Question 8:

The initial value of Health Club A is 60 as given in slope-intercept form
The initial value of Health Club B is 0 as given by $0 for 0 months
The initial value of Health Club C is 25 as given by y=mx+b --> 40=15(1)+b --> b=25
The initial value of Health Club D is 20 as given by "A customer pays a one-time fee of $20"
Therefore, Health Club A has the greatest initial value (or y-intercept) of $60

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